1) What early warning features appeared before the failure? Usually, before the diesel engine fails, there will be some abnormal signs in its speed, sound, exhaust, water temperature, oil pressure and other aspects, that is, the characteristics of fault omen. Staff can quickly make correct judgments according to the characteristics of omens and take decisive measures to avoid accidents. For example, if the valve leaks, the engine will emit black smoke; When the crankshaft bearing and journal wear too much, the engine will make a dull "boring" knocking sound.
2) What maintenance work have you done before? Usually some improper repairs or maintenance will cause some faults, and the staff can find clues from these repairs or maintenance.
3) Whether there have been similar failures before.
4) If the engine is still running, let it continue to run, so that more inspections can be made to see if it is safe.
2. Start with the simplest and easiest reason.
Most faults are relatively simple and easy to eliminate, so the staff should check the simplest and most obvious things first, which can save time, quickly find out the reasons, eliminate faults and reduce some unnecessary troubles. For example, "insufficient power" is usually caused by loose throttle mechanism and unclean fuel filter; "Excessive oil consumption" is usually caused by leakage of gasket and tubing joint.
3. Before starting the disassembly work, check and think repeatedly.
Most engine failures do not only originate from a component, but can be traced back to the relationship between components. In the process of troubleshooting, it often happens that the whole engine is disassembled in order to find the cause of the fault, so that all the clues to find the fault are destroyed in the process of disassembling. Therefore, we should check our thinking again to see if we have overlooked a simple solution. For example, not charging is not only the fault of the governor, but also the fan belt is too loose.
4, find out and eliminate the root cause of the fault.
After the mechanical fault is corrected, the root cause of the fault should be found out and eliminated to avoid similar faults in the future. The "stuck injector plunger" can be solved by replacing the failed plunger, but there is always one factor that causes the plunger to be stuck, which may be improper adjustment of the injector or water in the fuel.
According to the above basic steps, we can fundamentally find out the cause of the fault and the troubleshooting methods to avoid confusion and confusion.
So how can users use the current network technology to carry out professional fault diagnosis operation for generators? In order to avoid these failures as much as possible and improve work efficiency, Apple of Industrial Internet of Things can build a first-class universal data collector and universal data service platform based on the generator set health cloud platform.